Double sweeping of voltage bias on different nanodomains of both a-TaNx films. (a) Positive and (b) negative voltage bias swept on four nanodomains (curves 1 to 4) of a-TaNx film deposited on Au. (c) Positive and (d) negative voltage bias swept on three nanodomains (curves 5 to 7) of a-TaNx film deposited on Si. In the first three figures, significant current hysteresis is observed, while in the last figure, hysteresis effects are negligible.
Spyropoulos-Antonakakis et al. Nanoscale Research Letters 2013 8:432 doi:10.1186/1556-276X-8-432